San Francisco 49ers wide receiver Michael Crabtree (15) is pictured during a minicamp on June 5 in Santa Clara, Calif. Crabtree has been holding out of practice with the 49ers for a week now. The Texas Tech receiver was the 10th overall pick in the draft.

Santa Clara, Calif. ? Mike Singletary is sticking to the company line: San Francisco’s coach remains focused on the players who are in camp for the 49ers and isn’t busy worrying when top draft pick Michael Crabtree will end his holdout and finally show up for practice.

With one week of training camp already complete, each day the standout receiver from Texas Tech misses puts him further behind in learning a new offense and becoming familiar with his teammates.

“In terms of Crabtree, when he comes in, he comes in,” Singletary said Friday. “Would you love to have him in? Absolutely. You’d love to have him. Do we want him here? Yes, we want to have him in. But until that happens, I just can’t sit back and think about the what-ifs. All I can do is concentrate on what is, and control that.”

The Niners’ receiving corps took another hit to its depth chart with the loss of Brandon Jones for eight weeks because of a small fracture in his right shoulder. Jones, who underwent X-rays on Friday, was injured during Thursday’s late practice trying to make a diving catch during 7-on-7 work.

Singletary still believes he has the depth at wideout to get by, for now at least. The team’s first exhibition game is next Friday night against the Denver Broncos.

“This is not a political speech, it’s just the truth,” Singletary said. “We’ve got wide receivers that (coach) Jerry Sullivan is working his tail off with them. They’re growing, progressing, so we’re fine for right now.”

With Jones’ injury and Crabtree’s absence — the sides apparently were far apart Friday — there’s an opportunity for Dominique Zeigler and Arnaz Battle to make the team and play a role.

Still, with everything on his plate, Singletary gets a daily reminder that Crabtree isn’t around. There are constant questions about the receiver’s status and unresolved contract situation.

A report surfaced Thursday that the 10th overall pick was prepared to sit out all season, re-enter the draft in 2010 and wait for the money he thinks he deserves — comparable to that of Oakland Raiders rookie Darrius Heyward-Bey, the seventh overall pick who last week signed a five-year contract that will guarantee him at least $23.5 million.

ESPN.com quoted Crabtree’s cousin and adviser, David Wells, about the possibility of a yearlong holdout. The 49ers then released a statement saying, “In our view, there have been open and positive conversations on both sides.”

Singletary figures Crabtree is studying the playbook on his own to begin learning new offensive coordinator Jimmy Raye’s system.

“If I know him, he’s working his tail off, he’s studying the playbook. But it doesn’t really come together until you come out here and execute it. But hopefully when he comes in the learning curve is not as great as it may take some others. Hopefully he’ll just catch right on and go from there.”